​but like the Holy One who called you, be holy yourselves also in all your behavior; because it is written, “You shall be holy, for I am holy .”

1 Peter 1:15‭-‬16 NASB 

Do you remember when you got some new shoes and you couldn’t wait to wear them in school. They was clean and you protected them with your life through out the day. But when time past your shoes get more torn and more beat up and you care less about how they look. 
Are you in the same situation spiritually. When sin comes up you used to run away from it but now it don’t bother you. Let’s get back to pursuing holiness and that begins with repentance and prayer. Let’s put away the sins and everything else that hold us back from pursuing holiness. 

Therefore, since we have so great a cloud of witnesses surrounding us, let us also lay aside every encumbrance and the sin which so easily entangles us, and let us run with endurance the race that is set before us, fixing our eyes on Jesus, the author and perfecter of faith, who for the joy set before Him endured the cross, despising the shame, and has sat down at the right hand of the throne of God.

Hebrews 12:1‭-‬2 

God bless